Tool-clamp



' -vII. L.' Ross. TOOLA CLAMP.

APPLICATION FILED SEPT. II. 1917.

Patented Aug. 17,1920.

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,UNITED STATES lPATENT; OFFICE.

WILLIAM L. Ross, E JERSEY crrY, NEW JERSEY.

TOOL-CLAMP.

Specification of Letters Patent.

n Patented Aug. 17, 1920.

Application filed September 11,-1917.` Serial No. 190,829.

which the following is a specifcation.`

This invention relates to tool clamps. and

more particularly to a clamp for drills, the

same being designed for a number of'uses n andbeing intendedto take the place of a number of clamps of different forms. The primary object of the invention is the provision of a clamp of this character which may be expanded or contracted and locked in its several positions. i f

Another object of theinventio'n'is the provision of a clamp of this character which comprises a pair of (L) shaped members adjustably'connected together in such A`a manner that the horizontal portions may" be radially adjusted with relation to each other for va number of uses.-

A still further object of the invention is the provision of a device of thecharacter described which is of .simple construction, in-` expensive to manufacture and thoroughly reliable and efficient for the purpose for which it is intended.

Vith these and other objects in view, the invention resides in the novel combination and arrangements of parts fully described in the following description, particularly pointed out in the appended `claim and shown in the accompanying drawing Ain which- Y l Figure 1 is a side elevation of the clamp showing one `of its uses.

Fig. 2 is a vertical sectional view therethrough and v l Fig. 3 is a horizontal section on the line 3-3, of Fig. 2.

Referring to the drawing by characters ofl reference, A, v designates an ordinary work bench or table and B, a hand drill, which `isA supported in working position with relation to the work C, by'means of the clamp designated generally byy D. The.' clamp comprises a pair of angle members, one being in the nature ofa foot indicated by the numeral 10 and the other being in the nature of a head and indicated by the numeral 11. The horizontal portion ofthe foot member `10 is provided withan opening 13 through which passes a bolt 12, .the said bolt also passing through the bench or table A.

The bolt 12, is threaded at its lower en; tremity for the reception of a nut 14. The vertical limbs of they members 10 and 11, are

' interiorly threaded as at 15, to receivevthe threaded extremities 16, of the connecting rod 17, which is providedwith va manipulating portion 18. Lock nuts l19, have threaded engagement with the rod 17, to

retain Vthe members 1() and 11, in their ad justed positions.

In use of the device as shown, the drill is placed in operative position against the work and the clamp (D), isadjusted to secure the same in place by drawing the members l0 and 11, toward each other. It is sometimes .found desirable to adjust the horizontal limbs ofthe members 10 and 11, at different angles with relation to each other and this is accomplished by turningthe same to the position desired and locking them in their adjusted position through the medium of ythe nuts 19 thus accommodating the clamp vto many uses whereas it now requires a separateclamp for each use.

What 1s claimed as new is The combination ,with abench or like supl port; of means thereon for vholding andadvancing a drill to its work, comprising an angle foot member andan angle head member 'which -is disposed thereabove, pivot y means securing the foot member to the bench.. or support, `binding means for said pivot means, the vertical legs of the respective head and foot members having bores one provided with right hand'threads and the lother'withleft hand threads, a bolt member having a central manipulating portion and a shank provided withright and left hand threads respectivelyfrom said manipulating portion and received in and engaging with the right and left hand lthreads'in the legs of' the said foot and head members, and lock nuts on the bolt contactingwith-the confronting endsof thesaid legs. f

Intestimony whereof I aiix m v si nature. i vWILLIAM OSS. 

